linux-kernel - Re: [PATCH v3 0/3] support FEAT_MTE_TAGGED

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Message-ID: <aApBfHXRxn75Lebp@e129823.arm.com>
Date: Thu, 24 Apr 2025 14:49:48 +0100
From: Yeoreum Yun <yeoreum.yun@....com>
To: catalin.marinas@....com, will@...nel.org, broonie@...nel.org,
	anshuman.khandual@....com, joey.gouly@....com,
	yury.khrustalev@....com, maz@...nel.org, oliver.upton@...ux.dev,
	frederic@...nel.org, shmeerali.kolothum.thodi@...wei.com,
	james.morse@....com, mark.rutland@....com, huangxiaojia2@...wei.com,
	akpm@...ux-foundation.org, surenb@...gle.com, robin.murphy@....com
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, nd@....com
Subject: Re: [PATCH v3 0/3] support FEAT_MTE_TAGGED_FAR feature

Gentle ping in case of forgotten

> The FEAT_MTE_TAGGED_FAR feature provides support for
> reporting all non-address bits during a synchronous MTE tag check fault.
>
> This patchset extends the reporting tag to include
> not only the memory tag (logical tag) but also the address tag via
> si_addr when FEAT_MTE_TAGGED_FAR feature is supported.
>
> Since v1:
>   - add hwcap test for MTE_FAR feature.
>   - add MTE_FAR doc into elf_hwcap.rst
>
> Since v2:
>   - Rebase to 6.15-rc1
>
> Yeoreum Yun (3):
>   arm64: add FEAT_MTE_TAGGED_FAR feature
>   arm64/mm/fault: use original FAR_EL1 value when ARM64_MTE_FAR is
>     supported
>   tools/kselftest: add MTE_FAR hwcap test
>
>  Documentation/arch/arm64/elf_hwcaps.rst      |  3 +++
>  Documentation/arch/arm64/tagged-pointers.rst | 11 ++++++-----
>  arch/arm64/include/asm/hwcap.h               |  1 +
>  arch/arm64/include/uapi/asm/hwcap.h          |  1 +
>  arch/arm64/kernel/cpufeature.c               |  9 +++++++++
>  arch/arm64/kernel/cpuinfo.c                  |  1 +
>  arch/arm64/mm/fault.c                        |  7 +++++--
>  arch/arm64/tools/cpucaps                     |  1 +
>  tools/testing/selftests/arm64/abi/hwcap.c    |  6 ++++++
>  9 files changed, 33 insertions(+), 7 deletions(-)
>
> --
> LEVI:{C3F47F37-75D8-414A-A8BA-3980EC8A46D7}
>

--
Sincerely,
Yeoreum Yun